Joint Source-Channel Coding on a Multiple Access Channel with Side Information

TL;DR

This paper investigates joint source-channel coding strategies for transmitting correlated sources over a multiple access channel with side information, providing new theoretical conditions and practical coding schemes, especially for Gaussian and discrete sources.

Contribution

It offers new sufficient conditions for source transmission with distortion, and introduces effective joint coding schemes for both discrete and continuous sources over MACs.

Findings

Derived conditions for source transmission with distortion

Developed joint source-channel coding schemes for Gaussian and discrete sources

Unified previous results as special cases

Abstract

We consider the problem of transmission of several distributed correlated sources over a multiple access channel (MAC) with side information at the sources and the decoder. Source-channel separation does not hold for this channel. Sufficient conditions are provided for transmission of sources with a given distortion. The source and/or the channel could have continuous alphabets (thus Gaussian sources and Gaussian MACs are special cases). Various previous results are obtained as special cases. We also provide several good joint source-channel coding schemes for discrete sources and discrete/continuous alphabet channel.